138169-52-5 2,5-Cyclohexadien-1-one, 2-acetyl-6-((8-acetyl-5,7-dihydroxy-2,2-dimethyl-2H-1-benzopyran-6-yl)methyl)-3,5-dihydroxy-4-methyl-4-(3-methyl-2-butenyl)- Drummondin D